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| author | Paul E. McKenney <[email protected]> | 2020-09-03 15:23:29 -0700 |
|---|---|---|
| committer | Paul E. McKenney <[email protected]> | 2020-11-06 16:59:11 -0800 |
| commit | 3fcd6a230fa7d03bffcb831a81b40435c146c12b (patch) | |
| tree | bc576b40954c9deb95bf32151cb4535fe889297f /tools/perf/scripts/python/bin/export-to-postgresql-report | |
| parent | f4deaf90212c18d4b6d0687f0cba4c22d90b3391 (diff) | |
x86/cpu: Avoid cpuinfo-induced IPIing of idle CPUs
Currently, accessing /proc/cpuinfo sends IPIs to idle CPUs in order to
learn their clock frequency. Which is a bit strange, given that waking
them from idle likely significantly changes their clock frequency.
This commit therefore avoids sending /proc/cpuinfo-induced IPIs to
idle CPUs.
[ paulmck: Also check for idle in arch_freq_prepare_all(). ]
Signed-off-by: Paul E. McKenney <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/export-to-postgresql-report')
0 files changed, 0 insertions, 0 deletions